1967.0000000;-0.7688400
1968.0000000;0.3059431
1969.0000000;-0.6823405
1970.0000000;-0.9194142
1971.0000000;-0.4786227
1972.0000000;-0.1992639
1973.0000000;-1.9373164
1974.0000000;-1.2918777
1975.0000000;-0.7472222
1976.0000000;-1.3140309
1977.0000000;0.9526542
1978.0000000;0.6324402
1979.0000000;0.2319927
1980.0000000;0.3715708
1981.0000000;-0.5250158
1982.0000000;-0.3093117
1983.0000000;-0.2055890
1984.0000000;0.1757439
1985.0000000;-0.9791088
1986.0000000;-1.4723699
1987.0000000;-1.1188841
1988.0000000;-0.4029025
1989.0000000;-1.6932890
1990.0000000;-1.6470338
1991.0000000;-1.0041624
1992.0000000;-1.0286913
1993.0000000;-0.7839482
1994.0000000;-0.2523080
1995.0000000;0.0547081
1996.0000000;-0.1034305
1997.0000000;-0.5026877
1998.0000000;-1.8872871
1999.0000000;-1.2049775
2000.0000000;-1.2208350
2001.0000000;0.6047149
2002.0000000;-1.7320555
2003.0000000;-2.9157195